Fountain pen



Dec. 3, 1940.

M. FLoRo FOUNTAIN PEN Filed Oct. 2, 1939 ATTORNEYS Patented Dec. 3, 1940l UNITED PATENT f loFFlcr.

` "EUNTAINPEN Y y v Martiniano Floro, Manila, P. I.

@imitation october 2, 1939, serial No'. 297,581 claim. (ci. 12o-47)free'ilow of ink in the usev of the pen and on the charging of thelatter with ink a complete quick filling can be had.

, o Another object of the invention is theprovision of a pen of .thischaracter,` wherein valves or other cut-offs are dispensed with forcontrol of ink flow, the ink being storedin a chamber built l within theIbarrel or cylinderof the pen'and in this fashion relieving the latterof a collapsible sack or rubber bag which deteriorates from age and theaction of ink thereon'.

A further object ofthe. invention isftheprovision of a pen ofv thischaracter, .wherein rubber parts are entirely dispensed with and the penpoints can be automatically cleaned without requiring the removal ofsaid point or its feeder part in association therewith.

A further object of the invention is the provision of a pen of thischaracter, wherein a piston on reverse strokes thereof draws ink intothe pen and forces the ink under pressure into a storage chamber for thefeeding of such ink to the point in the use of the pen.

A still further object of the invention is the provision of a pen ofthis character, which is simple in its construction, thoroughly reliableand ehicient in operation, assured of a maximum capacity of ink and willaccomplish the filling operation rapidly and also 'will give furthersatisfactory service, being simple in construction and` inexpensive tomanufacture.

With these and other objects in view, the invention consists in thefeatures of construction, combination and arrangement of parts as willbe hereinafter more fully described in detail, illustrated in theaccompanying drawing, which discloses the preferred embodiment of theinvention and pointed out in the claim hereunto 5 appended.

In the accompanying drawing:

Figure l is a vertical longitudinal sectional View through a penconstructed in accordance with the invention. i

Figure 2 is an enlarged fragmentary vertical longitudinal sectional Viewthrough the cap end of the pen.

Figure 4 is a sectional view taken on the line sectional view throughthe point end of the pen.

Figure 3 is a fragmentary vertical longitudinal 4--5 of Figure 2 lookingin the direction of the Figure 5 is a sectional View taken on the line5-5 of Figure l looking in the direction of the arrows. f 5

Figure 6 is a sectional view taken on the line (ie-6 o-f Figure 3looking in the direction of the Similar reference characters indicatecorresponding parts throughout the several views inl 10 the drawing.

Referring to the drawing in detail, A designates generally the fountainpen constructed in accordance with the invention and comprises acylindrical body I0 of uniform cross sectional size 15 and constitutingthe barrel or casing for the pen. This body Ill has opposite open endsinternally threaded, one beingy detachably engaged by a sleeve-like feedcap II while the other end accommodates therein a removable closure capI2. 20 The feed cap I i has tted therein a feeder member I3 and a penpoint I4, respectively, the cap II being provided with a suitableclearance for snugly accommodating both the feeder member and the point.The body I IJ creates interiorly 25 thereof between the caps II and I2an ink chamber I5 `and operating in this chamber is a pull and pushpiston I5, its operating stem I'I plays snugly through a centerclearance therefor in the cap I2 and has fixed thereto at its outer endan 30 operating knob or grip I8 which -constitutes an invertedcup-shaped cover piece separably engageable over the cap I2, theengagement being had through screw threads I9 therebetween. 'The pistonI6 is adapted to be reciprocated within the 35 chamber I5 in the fillingof the pen A.

Formed longitudinally in the wall of the body I0 at diametricallyopposite points thereof are bypasses or diverting passages 20, these atopposite endsthrough the ports 2I and ducts 22 com- 40 municate with thechamber I5 through the body Il) and the cap II through the reduced innerend 23 thereof With the feed Ways or conduits 24' provided in the feedermember I3 for the discharge of air from within the chamber I5 through 45these conduits 24 to without the pen. The feeder member I3longitudinally thereof intermediate with respect to the conduits 24 hasprovided therein an inlet conduit 25 which opens through the outer endof said feeder member and also 50 through the inner end thereof into thechamber p I5. Ink is drawn in through this conduit 25 to within thechamber I5 next to the piston I 5 at the side thereof confronting thecap II on the outstroke of said piston. The air .at the other 55 side ofthe piston Within the chamber I5 is expelled through the passages orby-passes and the conduit 24 in the feeder member I3 to without the bodyI0. 'Ihe body I0 concentrically of the reduced end 23 of the cap II hasfeeder channels 26 in the inner face thereof, these allowing ink withinthe chamber I5 above the piston I6 to gravitate past the said piston andbe delivered through the feeder conduit to the pen point I4 when thepiston I6 is forced fully inwardly of the chamber I5 ofthe body I0.

When the piston I6 is moved inwardly of the ber I5 rearwardly of saidpiston I6.

To fill the pen the cap II with the point I4 and feeder therein isdipped into a bottle' of ink.

Now -on unscrewing the grip I8 from .the cap I2 an operator can pull thepiston upward and ink from the bottle will ow into the chamber I5 belowthe piston I6 through the conduit 25. On account of the vacuum createdby the displacement of the piston I6 the air in the chamber I5 will passout through the ports 2I, by-passes 2D, ducts 22 and conduits 24 untilthe piston is in its uppermost or outermost position. A partialoutermost stroke of the piston is indicated by dotted lines in Figure 1of the drawing. By pushing the piston downwardly in the chamber I5 inkaccumulated under the piston I6 will pass out with pressure through theconduit 25 and the chamber I5 above the piston will have created thereina vacuum due to the downward stroke of the said pist-on thus the inkwithin a bottle will flow or rush through the conduit 24, ducts 22,by-passes 20,-ports 2| into the chamber I5 resulting in lling thefountain pen with ink equal to the Volume of air displaced in the upwardmotion of the lsaid piston. By repeating the push-pull operation of thepiston I6 more than once has the advantage of cleaning the ducts andpassages of the fountain pen as the liquid has to flow therethroughunder pressure.

In writing with the pen ink in the chamber I5 will freely flow throughthe channels 26 from above the piston I6 and be delivered to the penpoint through the conduit 25.

It is preferable to have the external surface of -the body .IIly of-octagonal-formation for convenience j'invf the handlingjof the :pen forwriting purposes. y

What is claimed is: Y

A ypen of the kind described c-omprising a b arrel provided with achamber and intake passages, respectively, the intake passages beingdisposed diametrically opposite each other and lead communicate with thechamber at the said other end ofthe said barrel, a feeder memberreleasably fitting .the barrel and having passages opening directlyintothe chamber and .into the said intake passages, respectively, aremovable closure c'aptting said'barrel at the end opposite thefeedermember and. having a portion projected outwardly from the barrel,a pen pointl adjacent to said feederlmember.y and cooperating therewith;a piston .operating within the chamber and having a stemslidably fittingthe closure cap,.

a cap on said stem and removably engaged with the closure cap at theportion extended beyond the barrel and having a recess foraccommodatcommodatingthe feeder member and pen point'.

MARTINIANO FLORO.

from one end o'f the barrel to the other and ing the said extended endof the closure cap, the

barrel being formed next toone end thereof with` bypasses of a lengthfor effecting fluid iiow to;A

